# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    <a href="https://refractiveindex.info/download/data/2017/sumita_2017-02-02.agf">SUMITA Zemax catalog 2017-02-02</a> (obtained from <a href="http://www.sumita-opt.co.jp/en/download/">http://www.sumita-opt.co.jp</a>)<br>See also <a href="https://refractiveindex.info/download/data/2016/sumita_2016-02-01.pdf">SUMITA optical glass data book</a>
DATA:
  - type: formula 3
    wavelength_range: 0.36 1.55
    coefficients: 2.5520489 -0.011234947 2 0.014455084 -2 0.00046725318 -4 -3.6714004e-05 -6 2.2810504e-06 -8
  - type: tabulated k
    data: |
        0.270 8.2006E-06
        0.280 5.0647E-06
        0.290 3.1087E-06
        0.300 2.3225E-06
        0.310 9.9162E-07
        0.320 5.7142E-07
        0.330 3.0308E-07
        0.340 1.7029E-07
        0.350 1.0212E-07
        0.360 6.3729E-08
        0.370 5.3481E-08
        0.380 4.5703E-08
        0.390 4.6905E-08
        0.400 4.8108E-08
        0.420 5.0514E-08
        0.440 4.2271E-08
        0.460 3.6790E-08
        0.480 3.4533E-08
        0.500 3.1959E-08
        0.550 2.6340E-08
        0.600 2.8734E-08
        0.650 1.5541E-08
        0.700 1.6736E-08
        0.800 1.2745E-08
        1.060 1.6887E-08
        1.500 3.5864E-08
        2.000 3.5405E-07
CONDITIONS:
    temperature: 293
PROPERTIES:
    thermal_dispersion:
      - type: formula A
        coefficients: 5.06e-07 1.46e-08 -2.13e-11 4.85e-07 4.45e-11 0.187
    nd: 1.61035
    Vd: 57.9
    glass_code: 610579
    density:
      - value: 3090
    thermal_expansion:
      - temperature_range: 243 343
        value: 7.2e-06
      - temperature_range: 293 573
        value: 9.3e-06
    dPgF: -0.0058
    resistance:
        climatic: 2.0
        acid: 4.0